Answer:
58.05% probability that at least 1 of the students is a senior.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
The order in which the captains are chosen is not important. So we use the combinations formula to solve this question.
Combinations formula:
A probability is the number of desired outcomes divided by the number of total outcomes.
In this question:
Either no seniors are captain, or at least one is. The sum of these probabilities is 100%. The easier way to solve this question is finding the probability of no seniors being captain, and subtratcing 100 from this. So
Probability of no seniors being captain:
Desired outcomes:
Four captains, from a set of 18 + 18 + 15 = 51. So
Total outcomes:
Four captains from a set of 18 + 18 + 15 + 12 = 63. So
Probability:
41.95% probability of no seniors being captains.
Find the probability that at least 1 of the students is a senior.
p + 41.95 = 100
p = 58.05
58.05% probability that at least 1 of the students is a senior.
Answer: P(A)=4/425≈0,0094.
Step-by-step explanation:
The desk has 4 kings.
First card is drawn from a well shuffled deck is a card of king. ⇒
Second card is drawn from a well shuffled deck is a card of king too. ⇒
Answer:
hint for the first part
Step-by-step explanation:
3.50+(1.25*6)=
Answer:
The graph is attached below.
Step-by-step explanation:
Given the line equation
Comparing the line equation with the slope-intercept form
where m is the slope, and b is the y-intercept
Here:
m = -3
b = -2
When
x = 0, then y = -2 ∵ y = -3x - 2 = -3(0) - 2 = -2
When
x = 1, then y = -5 ∵ y = -3x - 2 = -3(1) - 2 = -3 - 2 = -5
The graph is attached below.
P= 12 + 4x^2 - 2 + x^2 + 3x^2
Combine like terms
12-2= 10
4x^2 + 3x^2 + x^2= 8x^2
P= 8x^2 + 10
Sorry if this isn't right but this is what I think you would do